Secret fat-burner: CalciumAs it turns out, milk really does do a body good--as do yogurt and cheese! A review of more than 90 studies in the journal Nutrition Reviews revealed a strong link between high calcium intake and improved body composition.

<b>1. Low-Fat Milk</b><br><b>2. Low-Fat Yogurt</b><br><b>3. Cheese</b><br><br><b>Secret fat-burner:</b> Calcium<br>As it turns out, milk really does do a body good--as do yogurt and cheese! A review of more than 90 studies in the journal <i>Nutrition Reviews</i> revealed a strong link between high calcium intake and improved body composition.<br><br><b>Plus:</b><br><a href="http://www.rd.com/living-healthy/19-weight-loss-secrets-from-around-the-world/article172978.html">19 Weight Loss Secrets From Around the World</a><br><a href="http://www.rd.com/slideshow/8-essential-foods-for-beautiful-skin">8 Essential Foods for Beautiful Skin</a>

Secret fat-burner: FiberEnjoy a delicious barley side dish instead of white rice with dinner and you could be well on your way to shedding dangerous belly fat, according to a study in the American Journal of Clinical Nutrition.

Secret fat-burner: Catechins'Catechins increase metabolism and the rate at which the liver burns fat,' says Journal of Nutrition study author Kevin C. Maki, PhD. To reap those rewards, drink four to six cups of caffeinated green tea a day and log at least 180 minutes of exercise each week.

Secret fat-burner: ProteinProtein helps with weight loss in a number of ways. First, your body uses more energy (think calories) to break down protein foods than it does to break down other foods. Protein also helps you hang onto muscle mass as you're losing weight, and since muscle burns more calories than fat, you want to keep as much of it as you can. Finally, protein dampens hunger better than carbohydrates do, says Donald K. Layman, PhD, the Journal of Nutrition study's lead researcher, adding that decreasing carbohydrates also helped the protein group lose weight.

Secret fat-burner: 'Good' fatsPlenty of studies point to nuts as a waist-friendly addition to your diet as long as you don't go overboard. Chalk it up to their fiber, their protein, and their 'good' fat, which may increase the body's sensitivity to insulin, aiding weight loss. Walnuts are one of the best non-fish sources of omega-3 fatty acids, and almonds provide an extra benefit in the form of bone-building calcium.

Secret fat-burner: Omega-3'sEating fat might sound like a crazy idea when you're trying to lose fat, but getting more omega-3 fatty acids from fatty fish like salmon could be just what the diet doctor ordered, according to a study in the British Journal of Nutrition. 'Although the exact mechanisms are unknown, omega-3 fatty acids reduce fat mass,' says Irene Munro, study author and researcher from the University of Newcastle in Newcastle, Australia. Other studies have found that omega-3 fatty acids make you feel less hungry and more satisfied up to two hours after eating a fatty fish meal. Aim to eat salmon or another oily fish, like mackerel, herring, or canned tuna, at least twice a week.

Secret fat-burner FlavonoidsWhat do these three foods have in common? They all contain flavonoids, natural chemicals in plant foods that may have fat-fighting effects. Women who consumed the most flavonoids had significantly lower increases in body mass index over a 14-year period than women who ate the least, according to a study in the American Journal of Clinical Nutrition. 'Animal studies have shown that these flavonoids can increase energy [calorie] expenditure, increase glucose uptake into muscle, and increase fat burning,' says Laura Hughes, MSc, the study's lead investigator and a nutritional epidemiologist at Maastricht University in the Netherlands.

Secret fat-burner: LignansThese shiny, nutty-tasting seeds pack a secret weight loss weapon: compounds called lignans. Consumption of lignans in postmenopausal women was associated with lower body fat and body mass index, according to a study in the British Journal of Nutrition. Try grinding and adding a tablespoon of flaxseed each day to cereals, yogurt, or salad dressing.

Secret fat-burner: AcidsResearchers say vinegar turns on genes that produce enzymes that help the body break down fat. Interested in trying it? Slurp 15 milliliters (about a tablespoon) of vinegar daily, perhaps diluting it with milk or soda to make it less acidic and more palatable.